Kulta
79
Au
Ryhmä
11
Jakso
6
Lohko
d
Protonia
Elektronit
Neutronia
79
79
118
Yleiset ominaisuudet
Järjestysluku
79
Atomipaino
196,966569
Massaluku
197
Luokka
Siirtymäalkuaineet
Väri
Kulta
Radioaktiivisuus
Ei
From the Latin word aurum meaning gold
Kiderakenne
Pintakeskinen kuutiollinen
Historia
Gold has been known since prehistoric times and was the first metal used by humans.
Gold artifacts dated to 5000 years ago have been found in Egyptian tombs.
Gold of 98% purity has been found in Nahal Qunah in the ancient kingdom of Israel, dating from about 6000 years ago.
Gold artifacts dated to 5000 years ago have been found in Egyptian tombs.
Gold of 98% purity has been found in Nahal Qunah in the ancient kingdom of Israel, dating from about 6000 years ago.
Elektroneja elektronikuorilla
2, 8, 18, 32, 18, 1
Orbitaalirakenne
[Xe] 4f14 5d10 6s1
India is the world's largest single consumer of gold
Fyysiset ominaisuudet
Olomuoto
Kiinteä
Tiheys
19,282 g/cm3
Sulamispiste
1337,35 K | 1064,2 °C | 1947,56 °F
Kiehumispiste
3129,15 K | 2856 °C | 5172,8 °F
Sulamislämpö
12,5 kJ/mol
Höyrystymislämpö
330 kJ/mol
Ominaislämpökapasiteetti
0,129 J/g·K
Esiintyvyys maankuoressa
3,1×10-7%
Esiintyvyys maailmankaikkeudessa
6×10-8%
Kuvalähteet: Wikimedia Commons (Alchemist-hp)
Synthetic made gold crystals by the chemical transport reaction in chlorine gas
CAS-numero
7440-57-5
PubChem CID-numero
23985
Atomiominaisuudet
Atomisäde
144 pm
Kovalenttisäde
136 pm
Elektronegatiivisuus
2,54 (Paulingin asteikko)
Ionisoitumispotentiaali
9,2255 eV
Moolitilavuus
10,2 cm3/mol
Lämmönjohtavuus
3,17 W/cm·K
Hapetusluvut
-1, 1, 2, 3, 5
Käyttö
Gold is used in coinage and is a standard for monetary systems in many countries.
It is also extensively used for jewelry, decoration, dental work, and for plating.
Gold is used widely in microelectronic circuits to ensure reliable, corrosion-resistant and static-free performance.
Gold leaf, flake or dust is used in some gourmet foods as decorative ingredient.
It is also extensively used for jewelry, decoration, dental work, and for plating.
Gold is used widely in microelectronic circuits to ensure reliable, corrosion-resistant and static-free performance.
Gold leaf, flake or dust is used in some gourmet foods as decorative ingredient.
Gold is considered to be non-toxic
Isotooppi
Vakaat isotoopit
197AuEpävakaat isotoopit
169Au, 170Au, 171Au, 172Au, 173Au, 174Au, 175Au, 176Au, 177Au, 178Au, 179Au, 180Au, 181Au, 182Au, 183Au, 184Au, 185Au, 186Au, 187Au, 188Au, 189Au, 190Au, 191Au, 192Au, 193Au, 194Au, 195Au, 196Au, 198Au, 199Au, 200Au, 201Au, 202Au, 203Au, 204Au, 205Au